Sanding dust screening device

Abstract

The invention discloses a sanding dust screening device, and relates to the technical field of board processing. The device comprises a spiral dust conveyor and a dust conveying fan, wherein a screening air box is connected to a discharging port of the spiral dust conveyor; the screening air box is connected to the dust conveying fan through a pipeline; a first screening object outlet is formed inthe bottom part of the screening air box; an air inlet is formed in the upper part of the first screening object outlet, and an air inlet adjusting plate is mounted; a dust scattering device is mounted at the discharging port of the spiral dust conveyor; a plurality of flow guide adjusting plates which are vertically arranged at intervals are mounted in the screening air box; and a plurality of second screening object outlets are formed in the lower parts of the flow guide adjusting plates. Compared with the prior art, the device has the advantages that sanding dust is scattered into dispersed dust through the scattering device and is screened by layers through the plurality of flow guide adjusting plates; sand and large dust particles are screened out; the screening effect is good; the recovered sanding dust basically does not contain sand; and when a rough board is subjected to sanding, the surface is prevented from sand marks.

Description

technical field [0001] The invention relates to the technical field of plate processing, in particular to a sanding dust screening device. Background technique [0002] During the production process of medium density fiberboard, it is necessary to carry out surface sanding treatment on the hot-pressed wool board, which will generate a large amount of sanding dust. In order to save energy, reduce consumption, and effectively utilize resources, sanding dust is screened and reused. Currently used sanding dust screening devices such as figure 1 As shown, it includes a dust screw conveyor 101 and a dust conveying fan 104. The discharge port of the dust screw conveyor 101 is connected with a screening bellows 102, and the screening bellows 102 is connected with the dust conveying fan 104 through a pipeline 103. At the bottom of the screening bellows 102, there is a The screened object outlet 105 is provided with an air inlet and an air inlet regulating plate 106 above the screen...

AI Technical Summary

Problems solved by technology

[0003] The problem to be solved by the present invention is to provide a sanding dust screening device, which can solve the problem that the screening effect of the existing sanding dust screening device is poor, and the recovered sanding dust contains sand grains. , causing the problem of sand marks on the surface

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